Winter may be a beast this year, but NASA says a new analysis of the world's climate shows that global warming didn't go away in 2013. The year was tied with two others in the last decade as the seventh-warmest in the records going back to 1880. With the exception of 1998, NASA says, the 10 warmest years on record have all occurred since 2000. Watch the accompanying video to see how temperatures have risen since 1950.

The average temperature in 2013 was 58.3 degrees Fahrenheit, NASA says, and that is 1.1 F warmer than the mid-20th century baseline. The average global temperature has risen about 1.4 degrees F since 1880

NASA's press release contained the usual qualifiers and caveats, including the fact that weather patterns can cause temperature changes from year to year, and rankings can be influenced by different analysis methods.

Still, NASA says that, while each year may not be warmer than the year before, we can expect each decade to be warmer than one before it. And the cause is the continued output of greenhouse gases into the atmosphere.

What about last summer in the United States, which was only the 42nd-warmest on record by NASA's own analysis? Other parts of the world were warmer, NASA says. Australia, for example, had its hottest year on record in 2013.